A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6110-00-339-4140
NSN 6130-01-492-6250
NSN 6220-01-358-1076
NSN 5999-01-249-8310
NSN 6150-01-548-5183
NSN 6150-00-455-1331
NSN 6645-01-408-0011
NSN 5996-01-360-7116
NSN 6135-00-100-8890
NSN 5990-01-193-0487
NSN 6135-00-351-8606
NSN 6645-00-938-2173